“item difficulty index”的概念、定义、翻译、参考文献-科学参考

单词	item difficulty index
释义	item difficulty index Encyclopedia 理学【基本概念】释 item difficulty index题目难度指数测验题目难易程度的度量指标。
随便看	mass concentration mass concrete mass conservation mass conservation equation mass costume mass cultural delight theory mass culture and elite culture mass current mass customization mass defect mass deficit mass degradation mass density mass destruction mass diffusivity mass discrepancy mass discrimination mass discrimination effect mass discussion mass dispersion mass distribution mass distribution function mass distribution of fission fragments mass distribution of fission product mass distribution of fission products

科学参考收录了854744条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。